java file reader introduction

Опубликовано: 24 Июль 2026
на канале: principalppgcas principal

Java FileReader

FileReader is a class in Java that is used to read character data from text files. It belongs to the java.io package and provides a simple way to read the contents of a file one character at a time or into a character array. FileReader is commonly used for reading plain text files such as .txt files. Before reading a file, an object of the FileReader class must be created by specifying the file name or file path. If the specified file does not exist, the program throws an exception. FileReader is often combined with classes such as BufferedReader to improve reading efficiency. It is widely used in Java applications for file handling, data processing, and reading text-based information stored in files.